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Old 12-01-2016, 12:43 AM   #82 (permalink)
Daschicken
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Join Date: May 2012
Location: Georgia
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Cibbie - '88 Honda CBR 250R
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Kill switch (not) progress....

Just tried unplugging my camshaft position sensor, no luck. Engine kept purring, didn't even hesitate. It did throw a check engine light though.

So I dug further into the wiring diagrams in my service manual and found the correct diagram this time. The upload file size limit makes the diagram unreadable, so here are the two noteworthy parts.

That wire coming off the bottom of C101 looks like it connects to another wire, which is connected to the PCM and called IGP.
Click image for larger version

Name:	Trimmed Engine performance diagram 5 top.png
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The other wire of each injector comes to the ECM/PCM as shown in this diagram
Click image for larger version

Name:	Trimmed Engine performance diagram 5 bottom.png
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ID:	20978

Right now, what i'm thinking is Hook a switch (again, not an electrical person) up to Connector 101 to somehow disable it, but there are other things connected to it too. I just looked closer at the top diagram and saw that the other two(or 3) circuits connected to C101 are the camshaft position sensor and the two(?) crankshaft position sensors. Each of these position sensors share a common ground, G101. Could I intercept G101, and wire it to a switch so that with the flip of a switch, the three sensors are no longer receiving ground?

I'm not an electrical person, so if anyone can offer advice on how I should progress, I would appreciate it.
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